18630612 has 216 divisors, whose sum is σ = 65065728. Its totient is φ = 4371840.

The previous prime is 18630593. The next prime is 18630629. The reversal of 18630612 is 21603681.

18630612 is a `hidden beast` number, since 18 + 6 + 30 + 612 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 396373 + ... + 396419.

Almost surely, 2^18630612 is an apocalyptic number.

18630612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18630612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32532864).

18630612 is an abundant number, since it is smaller than the sum of its proper divisors (46435116).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18630612 is a wasteful number, since it uses less digits than its factorization.

18630612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99 (or 83 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 18630612 is about 4316.3192653000. The cubic root of 18630612 is about 265.0995804703.

The spelling of 18630612 in words is "eighteen million, six hundred thirty thousand, six hundred twelve".